Where does “покаяться” come from?

покаяться (Russian) comes from Russian ка́яться, from Old East Slavic каꙗтисѧ, from Proto-Slavic kàjati, from Proto-Indo-European kʷōy-, from Proto-Indo-European kʷey- — to pay; to avenge.

покаяться (Russian): to repent to feel sorrow or regret for what one has done or omitted to do

Definitions

  1. to repent to feel sorrow or regret for what one has done or omitted to do

Ancestry of “покаяться”, step by step

StepLanguageWordMeaning
1Russianка́ятьсяto repent
2Old East Slavicкаꙗтисѧ—
3Proto-Slavickàjatito repent, to regret
4Proto-Indo-Europeankʷōy-—
5Proto-Indo-Europeankʷey-to pay; to avenge
Every word from Proto-Indo-European kʷey- →Every word from Proto-Indo-European kʷōy- →Every word from Proto-Slavic kàjati →